commit to branch navigationbar

CHALLENGE_2/sleepysound/lib/main.dart

@@ -1,4 +1,7 @@
 import 'package:flutter/material.dart';
+import 'pages/now_playing_page.dart';
+import 'pages/library_page.dart';
+import 'pages/settings_page.dart';
 
 void main() {
   runApp(const MyApp());
@@ -37,16 +40,6 @@ class MyApp extends StatelessWidget {
 
 class MyHomePage extends StatefulWidget {
   const MyHomePage({super.key, required this.title});
-
-  // This widget is the home page of your application. It is stateful, meaning
-  // that it has a State object (defined below) that contains fields that affect
-  // how it looks.
-
-  // This class is the configuration for the state. It holds the values (in this
-  // case the title) provided by the parent (in this case the App widget) and
-  // used by the build method of the State. Fields in a Widget subclass are
-  // always marked "final".
-
   final String title;
 
   @override
@@ -54,69 +47,67 @@ class MyHomePage extends StatefulWidget {
 }
 
 class _MyHomePageState extends State<MyHomePage> {
-  int _counter = 0;
+  int _selectedIndex = 0;
 
-  void _incrementCounter() {
+  void _onItemTapped(int index) {
     setState(() {
-      // This call to setState tells the Flutter framework that something has
+      _selectedIndex = index;
-      // changed in this State, which causes it to rerun the build method below
-      // so that the display can reflect the updated values. If we changed
-      // _counter without calling setState(), then the build method would not be
-      // called again, and so nothing would appear to happen.
-      _counter++;
     });
   }
 
+  Widget _getSelectedPage() {
+    switch (_selectedIndex) {
+      case 0:
+        return const NowPlayingPage();
+      case 1:
+        return const LibraryPage();
+      case 2:
+        return const SettingsPage();
+      default:
+        return const NowPlayingPage();
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
-    // This method is rerun every time setState is called, for instance as done
-    // by the _incrementCounter method above.
-    //
-    // The Flutter framework has been optimized to make rerunning build methods
-    // fast, so that you can just rebuild anything that needs updating rather
-    // than having to individually change instances of widgets.
     return Scaffold(
       appBar: AppBar(
-        // TRY THIS: Try changing the color here to a specific color (to
-        // Colors.amber, perhaps?) and trigger a hot reload to see the AppBar
-        // change color while the other colors stay the same.
         backgroundColor: Theme.of(context).colorScheme.inversePrimary,
-        // Here we take the value from the MyHomePage object that was created by
+        title: Text(_getPageTitle()),
-        // the App.build method, and use it to set our appbar title.
-        title: Text(widget.title),
       ),
-      body: Center(
+      body: _getSelectedPage(),
-        // Center is a layout widget. It takes a single child and positions it
+      bottomNavigationBar: BottomNavigationBar(
-        // in the middle of the parent.
+        items: const <BottomNavigationBarItem>[
-        child: Column(
+          BottomNavigationBarItem(
-          // Column is also a layout widget. It takes a list of children and
+            icon: Icon(Icons.play_circle_filled),
-          // arranges them vertically. By default, it sizes itself to fit its
+            label: 'Now Playing',
-          // children horizontally, and tries to be as tall as its parent.
+          ),
-          //
+          BottomNavigationBarItem(
-          // Column has various properties to control how it sizes itself and
+            icon: Icon(Icons.library_music),
-          // how it positions its children. Here we use mainAxisAlignment to
+            label: 'Library',
-          // center the children vertically; the main axis here is the vertical
+          ),
-          // axis because Columns are vertical (the cross axis would be
+          BottomNavigationBarItem(
-          // horizontal).
+            icon: Icon(Icons.settings),
-          //
+            label: 'Settings',
-          // TRY THIS: Invoke "debug painting" (choose the "Toggle Debug Paint"
-          // action in the IDE, or press "p" in the console), to see the
-          // wireframe for each widget.
-          mainAxisAlignment: MainAxisAlignment.center,
-          children: <Widget>[
-            const Text('You have pushed the button this many times:'),
-            Text(
-              '$_counter',
-              style: Theme.of(context).textTheme.headlineMedium,
           ),
         ],
+        currentIndex: _selectedIndex,
+        selectedItemColor: Colors.deepPurple,
+        onTap: _onItemTapped,
       ),
-      ),
-      floatingActionButton: FloatingActionButton(
-        onPressed: _incrementCounter,
-        tooltip: 'Increment',
-        child: const Icon(Icons.add),
-      ), // This trailing comma makes auto-formatting nicer for build methods.
     );
   }
+
+  String _getPageTitle() {
+    switch (_selectedIndex) {
+      case 0:
+        return 'Now Playing';
+      case 1:
+        return 'Library';
+      case 2:
+        return 'Settings';
+      default:
+        return 'Now Playing';
+    }
+  }
 }

CHALLENGE_2/sleepysound/lib/pages/library_page.dart

@@ -0,0 +1,24 @@
+import 'package:flutter/material.dart';
+
+class LibraryPage extends StatelessWidget {
+  const LibraryPage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return const Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          Icon(Icons.library_music, size: 100, color: Colors.deepPurple),
+          SizedBox(height: 20),
+          Text(
+            'Library',
+            style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
+          ),
+          SizedBox(height: 10),
+          Text('Your music library'),
+        ],
+      ),
+    );
+  }
+}

CHALLENGE_2/sleepysound/lib/pages/now_playing_page.dart

@@ -0,0 +1,24 @@
+import 'package:flutter/material.dart';
+
+class NowPlayingPage extends StatelessWidget {
+  const NowPlayingPage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return const Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          Icon(Icons.music_note, size: 100, color: Colors.deepPurple),
+          SizedBox(height: 20),
+          Text(
+            'Now Playing',
+            style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
+          ),
+          SizedBox(height: 10),
+          Text('No music playing'),
+        ],
+      ),
+    );
+  }
+}

CHALLENGE_2/sleepysound/lib/pages/settings_page.dart

@@ -0,0 +1,24 @@
+import 'package:flutter/material.dart';
+
+class SettingsPage extends StatelessWidget {
+  const SettingsPage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return const Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          Icon(Icons.settings, size: 100, color: Colors.deepPurple),
+          SizedBox(height: 20),
+          Text(
+            'Settings',
+            style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
+          ),
+          SizedBox(height: 10),
+          Text('App settings'),
+        ],
+      ),
+    );
+  }
+}